Telescopic supporting device for thread guides



Oct. 5, 1954 VELLA 2,690,643

TELESCOPIC SUPPORTING DEVICE FOR THREAD GUIDES Filed March 28, 1952 2Sheeis-Sheet 1 INVENTOR.

TELESCOPIC SUPPORTING DEVICE FOR THREAD GUIDES Filed March 28, 1952 L..VELLA Oct. 5, 1954 2 Sheets-Sheet 2 INVENTOR. L,1 &6a/

Patented Dot. 5, 1954 UNITED STATES PATENT OFFICE TELESCOPIC SUPPORTINGDEVICE FOR THREAD GUIDES 4 Claims.

My invention relates to a telescopic supporting device for thread guidesin ring spinning frames, and attains over conventional devices theadvantages hereinafter specified.

Figures 1 and 2 show devices as conventional in most of the ringspinning frames used at present, where the thread guides are fixed andthe spindle rail too is fixed. At the beginning of winding, the balloonis ample and of a certain length proportional to the lift (see Fig. 1);then as winding is progressing, the balloon is reduced more and moreuntil disappearing almost completely toward the top of the pirn (Fig.2). To this progressive reduction there corresponds, as it is known, aproportional increase of the stresses in the thread, which finally reachvalues so high as to overcome the resistance of the thread, breaking itand thus creating defects in the yarn, unless the speed of the spinningframe is greatly reduced.

It is an object of my invention to provide a device permitting obtaininga balloon, which after attaining the length of maximum yield, keeps saidlength constant till winding is completed, and keeps a convenientamplitude. The Variations of length and width undergone by the balloonbeing thus reduced to minimum, the stresses induced on the thread arereduced to an analogous extent. Moreover, since the balloon issufficiently ample and regular, it absorbs any possible instantaneousextra stresses caused in the thread by irregular running of thetraveller and avoids breakage thereof, while if as in conventional casesthe balloon is reduced specially in the last part of winding in lengthand in amplitude and is already charged with other extra stresses at anyincrease of the latter, even if transitory, breakage of the thread isinevitably produced. Said device shows the following characteristicfeatures, each of which constitutes a particular object of my invention.

(a) The ring-carrier plate and the thread guides are accommodated on thespinning frame and connected with one another in such a manner as topermit first the ring-carrier plate to rise alone for a certain sectionof the formation of the cop, whereafter the ring-carrier platesubsequently rises together with the thread guide;

(b) Between said movable parts, there is inserted a dampending systemwhence the weight of the part relative to the thread guide, which is atstandstill initially, operates rapidly from zero to the maximum valueduring said section of the formation of the cop, after reaching which,also the thread guides rise with the plate. Ihe elastic deformationsoccurring in the different members grow and the defects of formation ofthe cop which are a consequence of said deformations, are diluted invertical sense over a certain cop section in such a manner as to provepractically insignificant.

(0) During the stage of doffing, in order to facilitate the extractionof the full cops and replacement with the empty pirns, the support ofthe thread-guides can be lifted, while the bracket separators go fromthe horizontal position to the vertical position.

My invention will now be further described with reference to theaccompanying drawings illustrating by way of example one embodiment ofmy invention.

In the accompanying drawings:

Figs. 1 and 2 show two conventional devices wherein the thread guidesand the spindle rails are stationary.

Fig. 3 shows partly in section the thread guide support mounted on thespinning frame, in the starting position.

Fig. 4 shows the front arrangement on the ring spinning frame, of themembers composing the telescoping assembly.

Fig. 5 shows the final winding position of the ring-carrier plate inrespect to the thread guides.

Fig. 6 shows the position of the horizontal bracket separators duringreeling.

Fig. 7 shows the position of the bracket separators when they are tiltedautomatically during the doffing operations.

The parts of the spinning frame which do not relate to the invention aremarked in the accompanying drawings with thin solid lines and aredistinguished with reference numerals subsequent to those of the memberscomposing the device according to the invention, viz.: the spindle rail23 carries fixed thereon the stocks 24 which contain the pins of thespindles 25 onto which the empty pirns are fitted and on which the yarnis wound in superimposed conical layers by means of the ring-carrierplate 2 in its alternate and progressive movement in building up thecop; the drawing frame 26 instead serves to support all the drawingmembers of the spinning frame.

With reference to the accompanying drawings, the device according to theinvention is composed of a tubular guide 3 fixed by means of the support1 to the ring-carrier plate 2; in said tubular guide 3, which isprovided with a lower stop 3 located in the bottom thereof, a rod 4 isfreely slidable and carries at one end the traverse I which supports thecurled thread guide 5, while at 3 the other end there is provided thedampening spring 6.

To the traverse I there are fixed also the suspended or hanging supports8 supporting a shaft I free to rotate in its bearing seats and on which,along the longitudinal axis and rigid therewith, the tiltable separatorsE i interposed half-way between the spindles are carried.

Some separators carry a conveniently shaped tail I2 and verticallythereabove, fixed to the drawing frame 26, there are two stop noses: theupper one I3 is fixed and bent downward, while the nose I6 is pivotedand oscillates about the upper end and has its tip directed upward.

To the same traverse I and in convenient position there are also fixedthe angle-pieces I5 the lower ends of which rest at determined times onthe members 9 limiting the down stroke of the traverse I and slidablymounted each in a vertical guide I6. The guide It is fixed to a supportI"! by means of a screw IE so that the guide may be adjusted vertically;The support I! is rigid with the ring spinning frame and is alsoprovided with the sheave I8 necessary as a guide for the rope I8 whichcauses the vertical displacement of the members 9 in their own guides.One end of the rope is is suitably connected to the upper end of themember 9 as shown in Fig. 3.

As a consequence of the displacement of the stroke limiting members 5,the displacement of the angle pieces I5 of the traverse I is caused and,consequently, of the parts associated therewith; this independently ofthe displacement of the ring-carrier plate 2, due to the telescopingconnection 3 and 4.

Operation of the device is as follows:

The empty pirns are placed onto the spindles 25, the ring-carrier plate2 is placed in the starting position (Fig. 3), and thus the angle-piecesI5 come to rest on the members 9, which in turn rest on the fixed partsISA of the vertical guides I5, in such a manner as to leave between thetip of the pirn and the curled thread guides 5 a distance which isadjusted in setting the machine by adjusting each vertical guide I6 inits support I! after release of the screen It.

While the ring-carrier plate 2 starts its movement for the formation ofthe conical part and the progressive vertical movement of formation ofthe body of the cop, the rod 4 and the whole assembly fixed thereto(resting on the members 9) does not partake of the movement of theringcarrier plate 2 and the relative movement of lifting of the tubularguide 3 in respect of the rod 4 produces a progressive deformation ofthe dampening spring 6. If then the distance a has become zero and thespring 6 .has been closed (Fig. 5) the rod I resting on the bottom orlower stop 3 of the tubular guide 3 forms a unit therewith and,therefore, partakes of its movement.

Also the distance a is adjusted according to need by adjusting thetubular guide 3 in its support 7 provided with special adjusting andfastening screws.

From this time on, the rod 4 and the Whole upper assembly rests on thering-carrier plate 2, whence the distance from the latter to the curledthread guides 5 remains unaltered until completion of the cop (asvisible in Fig. 5)

The angle-pieces I5 then detach from the members 9 which are excludedfrom operation, during the entire following period of time.

When the cOpS are completely full with yarn, the members I and 2 arereturned to their initial position, with which the angle-pieces I5 cometo rest again on the members 9; then each rope I9 running toward theright (in the drawing) is actuated to make the members 9 slidevertically upwards in their vertical guides I6.

Together with the members 9 are lifted also the angle-pieces I5 restingthereon, hence also the traverse I and the respective thread guides 5 asfar as a certain limit, determined beforehand (visible in Fig. 7), suchas to leave a space between the tip of the pirn and the thread guide 5,so as to permit extraction of the full cops and fitting the empty pirnonto the spindles 25 without having to tilt the curled thread guides 5and the separators as in conventional spinning frames.

This lifting movement is effected while the ring is at standstill, thatis to say while the ring-carrier plate is at standstill, because the rodslips out the tubular guide 3 by a length corresponding to the liftingeffected.

In the stage of lifting the whole assembly fixed to I, the tail I2 comesto abut, at a certain point of its stroke, against the lower inclinedportion of the stop nose I4, whence as this nose is free to oscillateabout its fulcrum at its contact with the tail it is pushed by thelatter toward the inside of the spinning frame (in the drawing, towardsthe right), leaving passage free.

In the subsequent instant, the tail I2, on getting past the previousposition, meets this time the fixed stop nose I 3 and is compelled toassume together with the vertical translatory movement also the rotarymovement about the axis of shaft IE! and a sliding movement about thetip of the nose.

Since the tail is rigid with the shaft II], the latter must assume themovement of rotation imparted to it and, consequently, the bracketseparators I I, which too are fixed to the shaft at the opposite side ofthe tail, must also rotate through the same angle, so as to assume anearly vertical position (Fig. '7).

In that position, the whole space above the spindles as well as theinterspaces between said spindles, is completely free and without anymembers that might hinder the replacing of the cops.

After replacing the cops, the members 9 are lowered again by means ofreverse movement of ropes I9 and, consequently, all the parts resting onsaid members 9 return to the initial position (Fig. 3).

During this descending stage the tail I2 meets the upper surface ofinclined portion of the oscillating nose It whence it is not pushedtoward the inside, but tends to hook-in the tail, which therefore iscompelled, in going down, to rotate in the sense opposed to the stagepreviously described, returning the bracket separators to theirhorizontal position (Fig. 6) whereafter a new cycle starts.

The invention brings about considerable advantages in the field oftextile technique and its application to ring spinning frames providesover the other systems used at present:

Considerable increase of output;

Nearly total elimination of breakages due to reeling;

Possibility of producing also with a continuous spinning machine suchvery soft twists as else are obtainable only with self-acting spinningmachines;

General improvement of the qualities of yarn produced.

Also the whole assembly of the dampened telescope support for the threadguide may be applied to rings of obsolete construction, with suitablemodifications, renewing therewith the reeling system and bringin theiroperation and yield up to the standard of spinning frames of veryrecent;

make, with the obvious advantage of rejuvenating the textile plantsworking at present with obsolete machinery.

Of course, the subject matter described hereinbefore and illustrated inthe drawings, may be modified in the details of embodiment withoutdeparting from the scope of the invention.

What I claim is:

1. In a continuous ring spinning frame, a fixed spindle rail, a movablering carrier plate, a thread guide supporting device comprising atubular guide fixed to the ring carrier plate and provided with a lowerstop; a rod slidable in said tubular guide; spring means within theguide intermediate the rod and lower stop, the other end of said rodprojecting from said tubular guide; a traverse rigidly connected to saidprojecting end of said rod; thread guides carried by said traverse;hanging supports connected to said traverse; a rotatable shaft supportedby said traverse; bracket separators rigidly connected to the rotatableshaft; a limiting member and said traverse being provided with meansadapted to co-operate with said limiting member to limit its downstroke.

2. In a continuous ring spinning frame, a fixed spindle rail, a movablering carrier plate, a drawing frame, a thread guide supporting devicecomprising a tubular guide fixed to the ring carrier plate and providedwith a lower stop; a rod slidable in said tubular guide; spring meanswithin the guide intermediate the rod and lower stop, the other end ofsaid rod projecting from said tubular guide; a traverse rigidlyconnected to said projecting end of said rod; hanging supports connectedto said traverse; a rotatable shaft supported by said traverse; bracketseparators rigidly connected to said rotatable shaft; a limiting memberand said traverse being provided with an angle-piece adapted tocooperate with said limiting member to limit the down-stroke of thetraverse, said member being guided vertically by the drawing frame ofthe spinning frame and means for lifting said member during dotfing.

3. In a continuous ring spinning frame, a fixed spindle rail, a movablering carrier plate, a drawing frame, a thread guide supporting device,comprising a tubular guide fixed to the ring carrier plate and providedwith a lower stop; a rod slidable in said tubular guide; spring meanswithin the guide intermediate the rod and the lower stop, 5

the other end of said rod projecting from said tubular guide; a traverserigidly connected to said projecting end of said rod; hanging supportsconnected to said traverse; a rotatable shaft supported by saidtraverse; bracket separators provided with tails connected to therotatable shaft; stop noses connected to the drawing frame of thespinning frame and adapted to cooperate with said tails to move theseparators to a vertical position; a limiting member; said traversebeing also provided with an angle piece adapted to cooperate with saidlimiting member to limit its stroke and guided vertically by the drawingframe of the spinning frame; means for lifting said limiting memberduring dofling; comprising further stop noses carried oscillatably bythe drawing frame of the spinning frame and adapted not to cooperatewith said tails during the descent of the traverse to move theseparators to a horizontal position. v

4. In a continuous ring spinning frame, a fixe spindle rail, a movablering carrier plate, a drawing frame, a thread guide supporting device,comprising a tubular guide fixed to the ring carrier plate and providedwith a lower stop; a rod sliding in said tubular guide and resting atone of its ends upon said lower stop, the other end of said rodprojecting from said tubular guide; a traverse rigidly connected to saidprojectin end of said rod; thread guides carried by the traverse;hanging supports connected to said traverse; a rotatable shaft supportedby the supports; bracket separators provided with tails rigidlyconnected to the shaft; stop noses connected to the drawing frame of thespinning frame and adapted to cooperate with said tails to move theseparators to a vertical position; a limiting member; said traversebeing also provided with an angle-piece cooperating with said limitingmember to limit the stroke of the traverse; a guide for said limitingmember fixed to said drawing frame of the spinning frame, said guide forthe limiting member being adjustable vertically respecting the drawingframe; means for lifting said limiting member during dofiing; andfurther stop noses carried oscillatably by the drawing frame of thespinning frame and adapted not to cooperate with the tails of theseparators during the rising movement of the latter, but to cooperatewith said tails during descent, moving the separators again to ahorizontal position.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 570,423 Bracken Oct, 2'7, 1896 600,341 Whittum Mar. 8, 18981,008,066 Rhoades Nov. '7, 1911 1,913,616 Sailer June 13, 1933 1,965,471Schaaff July 3, 1934 2,030,110 Keight Feb. 11, 1936

